Exam 1 Flashcards
(22 cards)
1
Q
Equation to find decay constant
A
0.693/half-life
2
Q
Half-life of Cs-137
A
30.2 years
3
Q
Half-life of F-18
A
110 minutes
4
Q
Half-life of Ga-68
A
68 minutes
5
Q
Half-life of Lu-177
A
6.73 days
6
Q
Half-life of Mo-99
A
66 hours
7
Q
Half-life of Tc-99m
A
6 hours
8
Q
Fundamental Decay Law
A
A = A0e^(-λt)
9
Q
A0
A
The activity present initially
10
Q
A
A
The activity present some time later
11
Q
t
A
The time interval between A and A0
12
Q
λ
A
The decay constant for the radionuclide
13
Q
1 curie in dps
A
3.7x10^10 dps
14
Q
1 millicurie in dps
A
3.7x10^7 dps
15
Q
1 microcurie in dps
A
3.7x10^4 dps
16
Q
1 becquerel in dps
A
1 dps
17
Q
1 becquerel in curie
A
2.7x10^-11 Ci
18
Q
1 kilobecquerel in curie
A
2.7x10^-8
19
Q
Exposure rate equation
A
I = ((mCi)(Γ))/d^2
20
Q
I
A
Intensity of gamma source
21
Q
mCi
A
Number of mCi of source
22
Q
Γ
A
Specific gamma constant
